Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d48cbb17912dfe8…

MALICIOUS

PDF

68.0 KB Created: 2021-03-16 03:36:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 7fa7e5adde49fbecbb98b968240221ce SHA-1: 8f3f8aa2effebe9f95ec29a07c7ae26225d966a9 SHA-256: 0d48cbb17912dfe817a76ea129c3f59a00389cc908ba94a2b0631ef8bf04b127
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://fokemale.ru/wix?keyword=pokemon+go+samsung+app+apk+mirror PDF link annotation
    • http://nojuror.22web.org/galvanic_cell_diagram_worksheet.pdfIn PDF document text
    • https://kumeboxisadinur.weebly.com/uploads/1/3/4/6/134684257/cb16a01c383ca5e.pdfIn PDF document text
    • https://jetukuzimol.weebly.com/uploads/1/3/2/6/132695660/sadisud.pdfIn PDF document text
    • https://cdn.sqhk.co/zuzipogowita/id7ifib/tabikojaresupasobubi.pdfIn PDF document text
    • https://cdn.sqhk.co/torujazelome/bjd27ka/60873386687.pdfIn PDF document text
    • https://cdn.sqhk.co/difixoruze/iNDTiep/53000942647.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/64de3d39-cdab-4ff8-9c3f-989f8d76d013/remodad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c0b741c-5c2e-4db1-a233-41a6edd4b3b6/95057294987.pdfIn PDF document text
    • http://zezatiwo.epizy.com/sims_3_pets_cheat_codes.pdfIn PDF document text
    • http://nuvipapijulabu.epizy.com/legal_services_contract_template_philippines.pdfIn PDF document text
    • https://054d5c26-596f-48a3-87a7-0fc79031e5db.filesusr.com/ugd/599026_e5fe4b1dfb8e48659aaf1a0468097812.pdf?index=trueIn PDF document text
    • https://2e8e3215-33bf-4fe1-bc67-b38dac560527.filesusr.com/ugd/269bb8_e726861ce9c14460b32edf3f39ed19f5.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/da83ec0e-0ca3-4300-a02b-0d3ede4b43c2/sitting_yoga_poses_with_names_in_hindi.pdfIn PDF document text
    • http://dasebasesewe.epizy.com/fishing_planet_ubersheet_project.pdfIn PDF document text
    • http://baminitase.epizy.com/ap_english_language_and_composition_book_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85bb4a6a-ab37-464d-9a15-e0d41827728d/lenovo_g50-45_ram_upgrade.pdfIn PDF document text
    • https://9c12218e-e157-4070-b33f-4467b3cb42bb.filesusr.com/ugd/0c60a0_a2ae00d3a47943b18b20b02ab9da4486.pdf?index=trueIn PDF document text
    • http://nunitew.rf.gd/nalorowifojafuxisaxaset.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cdd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDD2 5172 bytes
SHA-256: bc6bbf5cc36b1b4f893d4bd58c115ff9fa40350dbc23ec212a8f2f08391c1dbe
font_01_sfnt_off0000df5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF5D 10540 bytes
SHA-256: 120ecf58b0481d4405022af87c078aec75e8b1e45d8de60df268fd9ee38866bc

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